title: Lung re-expansion following one-lung ventilation induces neutrophil cytoskeletal rearrangements in rats.
abstract: OBJECTIVE
  To investigate the morphological and functional behavior of neutrophils during and after one-lung ventilation (OLV).
  
  
  METHODS
  We utilized an OLV rat model system and performed 3 hours of OLV followed by either re-expansion (RE) and 30 minutes of two-lung ventilation (TLV) (RE group), only two-lung ventilation (TLV group), or only OLV (OLV group). Cytoskeletal rearrangements of circulating neutrophils were assessed by determining the localization of filamentous actin (F-actin). In addition, the number of sequestered neutrophils in the lung capillary and the cytokine-induced neutrophil chemoattractant 1 (CINC-1) levels in the plasma were determined.
  
  
  RESULTS
  The F-actin rimmed neutrophils in the RE group increased after RE, but did not increase in the other groups. In the RE group, the sequestered neutrophils in the ventilated lung were significantly more numerous, and the plasma CINC-1 levels were significantly higher than in the other groups.
  
  
  CONCLUSIONS
  Lung RE following OLV induces cytoskeletal rearrangements in circulating neutrophils and would thereby promote their sequestration in the lung capillaries. The plasma CINC-1 elevation after RE can be involved in neutrophil recruitment.
authors.affiliation: Department of Thoracic Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Eguchi
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Hamanaka
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Kondo
authors.forename: Gaku
authors.initials: G
authors.lastname: Saito
authors.forename: Takayuki
authors.initials: T
authors.lastname: Shiina
authors.forename: Tomonobu
authors.initials: T
authors.lastname: Koizumi
authors.forename: Kazuo
authors.initials: K
authors.lastname: Yoshida
mesh_terms: D000199:Actins / Q000378:metabolism; D055371:Acute Lung Injury / Q000209:etiology / Q000276:immunology / Q000378:metabolism* / Q000503:physiopathology; D000818:Animals; D054360:Chemokine CXCL1 / Q000097:blood; D003599:Cytoskeleton / Q000276:immunology / Q000378:metabolism*; D004195:Disease Models, Animal; D008168:Lung / Q000276:immunology / Q000378:metabolism* / Q000503:physiopathology; D008297:Male; D020556:Neutrophil Infiltration; D009504:Neutrophils / Q000276:immunology / Q000378:metabolism*; D061810:One-Lung Ventilation; D017208:Rats, Wistar; D013997:Time Factors
chemical_list: D000199:Actins; D054360:Chemokine CXCL1; C513297:Cxcl1 protein, rat